Re: How to populate the approval date in the Sharepoint list automatically?
@SK_Tan
As your approval type is first to respond you can try using the response date, instead of completion date it will also give you the same date.
I would also suggest you to have a look at the OutPut of the approval action card to see if you getting the data in the desired fields that you are trying to use.
After the flow run completes you will be able to see the outputs as below.

Copy the content present in the body and paste it in a notepad and you will be able to analyze the output of the action card.
Please try using both the above suggestions and you will be able to achieve the desired result.
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